What did you have to do to overcome the usb driver issues? Actually what are the usb driver issues? Is it the same with bfgminer?
GETTING STARTED WITH BUTTERFLY LABS ASICS
Unlike other software, cgminer uses direct USB communication instead of the
ancient serial USB communication to be much faster, more reliable and use a
lot less CPU. For this reason, setting up for mining with cgminer on these
devices requires different drivers.
WINDOWS:
On windows, the direct USB support requires the installation of a WinUSB
driver (NOT the ftdi_sio driver), and attach it to the Butterfly labs device.
The easiest way to do this is to use the zadig utility which will install the
drivers for you and then once you plug in your device you can choose the
"list all devices" from the "option" menu and you should be able to see the
device as something like: "BitFORCE SHA256 SC". Choose the install or replace
driver option and select WinUSB. You can either google for zadig or download
it from the cgminer directory in the DOWNLOADS link above.
Ckolivas hosts the zip file for the Zadig utility. It's a tiny little download that you run, follow the steps, install the driver, and then you can start mining. Takes about 90 seconds to download, unzip, run, install drivers, and start mining.
